Solid construction with a nice finish.
I’ve had these for about a month and have used them several times. They are definitely much better than resting my foot on the door frame! They are built solid, and the finish is very nice. Once you tighten the bolt, they don't budge.
A quick tip: I added some heat-shrink tubing to the threads and the stop post. The tubing on the threads makes for a nice, snug fit, and putting it on the stop post prevents metal-on-metal contact so it won't scratch the paint on the back of the hinge.